83999-44-4Relevant articles and documents
Organocatalytic enantioselective protonation of silyl enolates mediated by cinchona alkaloids and a latent source of HF
Poisson, Thomas,Dalla, Vincent,Marsais, Francis,Dupas, Georges,Oudeyer, Sylvain,Levacher, Vincent
, p. 7090 - 7093 (2008/09/17)
Hidden benefits: The enantioselective organocatalytic protonation of silyl enolates has been achieved by using readily available cinchona alkaloid catalysts (1) and a latent source of HF that delivers "at will" the active catalytic hydrogen fluoride salt
ENANTIOSELECTIVE DEPROTONATION OF TWO RACEMIC CYCLIC CARBONYL COMPOUNDS BY A CHIRAL LITHIUM AMIDE
Eleveld, M. B.,Hogeveen, H.
, p. 631 - 634 (2007/10/02)
The cyclic carbonyl compounds 2 and 8 have been obtained in optical active form (o.y. 46percent and 36percent, respectively) from the racemic compounds by a deprotonation/protonation sequence, using chiral lithium amide 1.The optical activity of 2 is caus
Oxidation of Enol Silyl Ethers: Preparation of Aeginetolide, Dihydroactinidiolide, and Actinidiolide
Rubottom, George M.,Juve, Henrik D.
, p. 422 - 425 (2007/10/02)
The preparation of the C11-terpenic lactones aeginetolide (1), dihydroactinidiolide (2), and actinidiolide (3) by using 1,3,3-trimethyl-2-(trimethylsiloxy)cyclohexene (9) as a common precursor is discussed.The key steps in the synthetic route involve the sequential m-chloroperbenzoic acid (MCPBA) oxidation and acetylation of 9 and of the siloxy diene 13 derived from 9.